As for the effects of IRAK1 expression on the survival of hepatocellular carcinoma patients, since the group cutoff (the expression threshold for splitting the high and low expression within the LIHC dataset) was set at median, the high expression (samples with expression level higher than this threshold) and low expression (samples with expression level lower than this threshold) groups each accounted for 50% of the total cases. The gene discussed is IRAK1; the disease is hepatocellular carcinoma.